# SelectTranslate vs Caption AI

The clearest difference is device support: SelectTranslate at 4 against Caption AI's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. SelectTranslate sells 2 in-app purchases, starting at $6.00 per month and Caption AI sells 4 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

SelectTranslate ships an update every 3 weeks, Caption AI monthly. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | SelectTranslate | Caption AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 41 MB | 48 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [HKZINGSOFTWARELIMITED](https://appshunter.io/developer/1827445595) | [Beijing Xingnian Trading Department (Individually Owned Business)](https://appshunter.io/developer/1556019310) |

## What reviewers say

### SelectTranslate

[App page](https://appshunter.io/ios/app/selecttranslate-ai-translator/id6748817568)

**Features:** Safari Extension

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly Plan | $6.00 | per month |
| Plus Annual Plan | $66.00 | per year |


### Caption AI

[App page](https://appshunter.io/ios/app/caption-ai-subtitle-maker/id6760328167)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Monthly | $3.99 | per month |
| Annual | $14.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is SelectTranslate free?

SelectTranslate is free to download, with in-app purchases available.

### Is Caption AI free?

Caption AI is free to download, with in-app purchases available.

### Do SelectTranslate or Caption AI have ads?

Neither SelectTranslate nor Caption AI shows ads.

### Which is updated more often, SelectTranslate or Caption AI?

SelectTranslate ships an update every 3 weeks, and Caption AI monthly. Most recently, SelectTranslate was updated on October 9, 2026 and Caption AI on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*